Gray Code Decoder in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 1st 2bular 0 7 275ms 5 Jul 2025 1st Natanaelel 🇸🇪 0 7 276ms 5 Jul 2025 3rd kg583 🇺🇸 0 9 920ms 14 May 2025 4th 2bular 0 13 5ms 9 Dec 2024 4th ovs-code 🇩🇪 0 13 4ms 5 Jan 2025 4th Natanaelel 🇸🇪 0 13 4ms 8 May 2025 4th SirBogman 🇺🇸 0 13 5ms 12 Oct 2025 4th namelessiw 0 13 335ms 25 Oct 2025 9th saito-ta 🇯🇵 0 18 75ms 11 May 2025 10th pardouin 🇫🇷 0 20 74ms 25 Feb 2025 10th AlephSquirrel 0 20 10ms 8 days ago 10th ovs-code 🇩🇪 0 20 15ms 8 days ago 13th emgordon154 0 26 349ms 19 days ago 14th AlephSquirrel 0 27 7ms 8 days ago 14th ovs-code 🇩🇪 0 27 5ms 4 days ago 16th 2bular 0 28 36ms 9 Oct 2025 16th SirBogman 🇺🇸 0 28 38ms 9 Oct 2025 18th GolfingSuccess 🇬🇷 0 29 102ms 25 Nov 2024 18th Natanaelel 🇸🇪 0 29 37ms 11 May 2025 18th ovs-code 🇩🇪 0 29 35ms 9 Oct 2025 18th ovs-code 🇩🇪 0 29 125ms 8 days ago 22nd Shanethegamer 🇺🇸 0 32 66ms 19 May 2025 23rd Natanaelel 🇸🇪 0 33 164ms 8 May 2025 24th 4atj 0 35 267ms 21 May 2025 25th 4atj 0 36 223ms 21 May 2025 26th saito-ta 🇯🇵 0 37 8ms 11 May 2025 26th Natanaelel 🇸🇪 0 37 9ms 11 May 2025 28th Natanaelel 🇸🇪 0 38 37ms 8 May 2025 29th error256 0 39 68ms 8 May 2025 30th stefangimmillaro 0 41 67ms 9 May 2025 31st Shanethegamer 🇺🇸 0 42 37ms 13 Dec 2024 31st MeWhenI 🇻🇦 0 42 1,120ms 15 Apr 2025 31st saito-ta 🇯🇵 0 42 368ms 10 May 2025 34th bitsandbeyond 🇳🇱 0 44 1,224ms 3 days ago 35th error256 0 45 993ms 12 Apr 2025 36th ovs-code 🇩🇪 0 48 295ms 23 Feb 2025 37th antimon2 🇯🇵 0 49 279ms 16 Dec 2024 37th DialFrost 🇸🇬 0 49 56ms 9 May 2025 37th kg583 🇺🇸 0 49 11ms 3 Oct 2025 40th Shanethegamer 🇺🇸 0 50 3,544ms 8 May 2025 41st lukegustafson 🇺🇸 0 51 36ms 16 Jun 2025 42nd Shanethegamer 🇺🇸 0 52 958ms 13 Dec 2024 42nd error256 0 52 3,706ms 26 Sep 2025 44th kg583 🇺🇸 0 53 6ms 2 Oct 2025 44th albanian-laundromat 0 53 771ms 5 days ago 46th Shanethegamer 🇺🇸 0 54 39ms 13 Dec 2024 46th rucin93 🇵🇱 0 54 38ms 24 Feb 2025 46th error256 0 54 25ms 2 May 2025 46th sean-niemann 🇺🇸 0 54 38ms 8 May 2025 50th Natanaelel 🇸🇪 0 55 11ms 8 May 2025 50th albanian-laundromat 0 55 14ms 5 days ago 52nd kg583 🇺🇸 0 56 365ms 1 Dec 2024 52nd kg583 🇺🇸 0 56 2,856ms 3 Oct 2025 54th edsrzf 🇳🇿 0 57 12ms 10 May 2025 55th pardouin 🇫🇷 0 58 508ms 24 Feb 2025 55th kg583 🇺🇸 0 58 8ms 2 Oct 2025 57th lifthrasiir 🇰🇷 0 59 488ms 11 Dec 2024 57th ovs-code 🇩🇪 0 59 446ms 23 Feb 2025 57th sean-niemann 🇺🇸 0 59 450ms 19 May 2025 60th khvdm 0 60 151ms 13 Jan 2025 60th emgordon154 0 60 281ms 9 May 2025 60th emgordon154 0 60 380ms 9 May 2025 63rd DialFrost 🇸🇬 0 61 23ms 24 Feb 2025 64th Andrey-Plotnikov 0 62 23ms 12 Jan 2025 64th XenThe 🇬🇧 0 62 11ms 15 Jul 2025 66th kg583 🇺🇸 0 63 920ms 1 Dec 2024 66th hallvabo 🇳🇴 0 63 150ms 30 Dec 2024 66th pardouin 🇫🇷 0 63 245ms 24 Feb 2025 66th Shanethegamer 🇺🇸 0 63 158ms 7 May 2025 66th sean-niemann 🇺🇸 0 63 7ms 9 May 2025 66th rucin93 🇵🇱 0 63 7ms 10 May 2025 66th edsrzf 🇳🇿 0 63 6ms 10 May 2025 66th targrik 0 63 6ms 8 Oct 2025 66th albanian-laundromat 0 63 12ms 4 days ago 75th CornerMercury 🇬🇧 0 64 18ms 3 Dec 2024 1–75 of 189 Next Last